Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 6969172 | Safety glasses with flexible frame and interchangeable dual-lenses Safety eyewear (10) having interchangeable lens(es) (28,30) is provided. To provide for interchange of the lenses (28,30) in the frame (12), upper and lower frame members (32,34) are molded from a harder, more rigid plastic while l... | 11/29/2005 |
| 6502938 | Attachment structure of a frame body relative to a front portion There is provided an attachment structure of a frame body relative to a front portion capable of attaching the frame body to the front portion with a simple construction, and also there is provided an attachment structure of a frame body relative to a fro... | 01/07/2003 |
| 5835183 | Rimless spectacles Spectacles including a plurality of clamp members for connecting lens supporting parts of the spectacles to the lenses, and elements for increasing friction resistance between a lens contacting portion of a clamp member and respective surfaces of the lens... | 11/10/1998 |
| 5748280 | Rimless eyeglasses having a single wire bridge and removable lenses Rimless eyeglasses having removable lenses. Each lens has a pair of bridge securing openings. The bridge is formed from a single wire. The single wire bridge is bent to form two c-shaped sections. Each c-shaped section is threaded through a respective len... | 05/05/1998 |
| 5355183 | Sealed adjustable polarized sunglasses Disclosed and claimed are a substantially hermetically sealed variable density ophthalmic device, preferably in the form of sunglasses or goggles. The device includes front and rear frame components which matingly fit and seal together. The polarized or r... | 10/11/1994 |
